3 Color & 6 Brightness Adjustable: Offers 3 useful color temperature modes: yellow (3000K), warm white (4000K), and cool white (6000K). Each light head has an independent switch with 3 dimmable brightness levels, allowing you to choose the ideal setting for reading, knitting, camping, repairing, and more.Rechargeable: USB rechargeable with a reversible plug for easy connection. Powered by a premium 1000mAh rechargeable battery, it provides up to 80 hours of long-lasting, consistent brightness on a single charge (based on general reading use with one light head).Eye Care: Features flicker-free technology and a blue light filter with advanced LED beads to reduce eye strain for both kids and adults. The ergonomic design includes flexible, adjustable arms for comfortable positioning and a hands-free neckband for extended use.Narrow Beam Design: Special 90-degree narrow beam angle provides focused brightness exactly where needed while minimizing light spill, so it wont disturb others nearby.Lightweight and Compact: The flexible neck light is small and portable, easily fitting into your suitcase or bag, making it an ideal travel companion for reading on the go.